Hot-blast stove baking system and baking method thereof

Abstract

The invention relates to the technical field of hot-blast stoves, and discloses a hot-blast stove baking system and a baking method thereof. The hot-blast stove baking system comprises a hot-blast stove, and the input end of a combustion stop valve is fixedly provided with a baking burner; a first heat energy recovery assembly, a heat energy recovery heat preservation assembly, a smoke filtering assembly and a second heat energy recovery assembly are arranged between the oven burner and the flue. The first heat energy recovery assembly is arranged, fuel gas is conveyed into a fuel gas adjusting pipeline and an air adjusting pipeline through a fuel gas generator and a combustion-supporting fan, combustion-supporting air is conveyed into a fuel inner pipe, then the fuel inner pipe is conveyed into an oven burner through a fuel main pipe, a combustion stop valve is opened to ignite the oven burner, and a flue is opened; oven flue gas is discharged through the flue, the flue gas is introduced into the smoke cavity through the first smoke outlet pipe, at the moment, the hot flue gas can heat the fuel inner pipe, then the fuel inner pipe is heated to heat fuel gas and air passing through the fuel inner pipe, molecular movement of the fuel gas and the air is improved, and the combustion efficiency of fuel is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hot blast stoves, in particular to a hot blast stove baking system and a baking method thereof. Background Art

[0002] A hot air furnace is a heating device used in industrial production, mainly used to provide hot air or hot gas to meet various process requirements. It transfers heat energy to air or gas by burning fuel (such as coal, natural gas, oil, etc.), and then sends the heated air or gas to the production site. It is commonly used in metallurgy, building materials, chemicals, ceramics and other industries. At present, there are the following problems when using hot air furnaces: The hot air furnace baking system is mainly composed of a combustion chamber, a heat exchanger, a fan, a control system and other parts. At present, when the hot air furnace is in use, a baking burner is often used for baking. However, in the baking process, the baking furnace will emit flue gas, which contains a large amount of heat, resulting in a waste of heat energy. In addition, the flue gas contains a large amount of particulate matter, which will cause environmental pollution if it is directly discharged. Therefore, improvements are needed. Summary of the invention

[0003] The object of the present invention is to provide a hot blast furnace baking system and a baking method thereof to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A hot blast furnace baking system and a baking method thereof, comprising a hot blast furnace, wherein a main burner is fixedly installed on the top of the hot blast furnace, an arch inlet and a hot air duct are respectively opened on both sides of the top of the hot blast furnace, a combustion cut-off valve is fixedly installed on the outer side of the arch inlet, a baking furnace burner is fixedly installed on the input end of the combustion cut-off valve, a flue and a cold air duct are respectively opened on both sides of the bottom of the hot blast furnace, and a hot air duct is arranged between the baking furnace burner and the flue. The first heat recovery component is arranged between the oven burner and the flue. The first heat recovery component is provided with a fuel inner tube, a fuel outer tube and a smoke chamber. The smoke discharged from the flue passes through the smoke chamber to heat the fuel inner tube, so that the combustion raw materials on the inner side of the fuel inner tube are heated, the movement between the fuel gas and the air molecules is accelerated, the combustion efficiency is improved, the preheating time is shortened, and the oven efficiency is improved; The heat recovery and insulation component is arranged at the input end of the oven burner. The heat recovery and insulation component is provided with a sleeve. The sleeve is used to insulate the pipeline during heat recovery to ensure high efficiency of the transport between the molecules of the fuel. The smoke filter assembly is arranged on one side of the hot blast furnace. The smoke filter assembly is provided with a filter box and a filter screen, and uses the filter screen inside the filter box to filter the smoke to prevent the particles in the smoke from being discharged and polluting the atmosphere. The second heat energy recovery component is arranged inside the flue gas filtering component. The second heat energy recovery component is arranged inside the flue gas filtering component. The second heat energy recovery component is arranged inside the flue gas filtering component. The first cooling hollow plate, the second cooling hollow plate and the third cooling hollow plate are used to perform heat exchange on the exhausted flue gas, so as to cool the flue gas, reduce the direct emission of high-temperature flue gas and reduce the risk of thermal damage.

[0005] Optionally, the first heat energy recovery component includes a gas regulating pipeline, an air regulating pipeline, a first smoke outlet pipe and a fuel main pipe, the output ends of the gas regulating pipeline and the air regulating pipeline are fixedly installed on the side wall of the fuel inner tube, the first smoke outlet pipe is fixedly installed on the flue output end and the side wall of the fuel outer tube, the fuel main pipe is fixedly installed on the top of the fuel inner tube and the input end of the furnace burner, the gas regulating pipeline input end is fixedly installed with a gas generator, and the air regulating pipeline input end is fixedly installed with a combustion-supporting fan.

[0006] Optionally, the output ends of the gas regulating pipeline and the air regulating pipeline are both connected to the fuel inner tube, and the input ends of the gas regulating pipeline and the air regulating pipeline are respectively connected to the output end of the gas generator and the output end of the combustion-supporting fan, one end of the first smoke outlet pipe is connected to one end of the flue, and the other end of the first smoke outlet pipe is connected to the inside of the smoke chamber, one end of the fuel main pipe is connected to the input end of the oven burner, and the other end of the fuel main pipe is connected to the inside of the fuel inner tube.

[0007] Optionally, the inner fuel tube is located at one side of the hot blast stove, the outer fuel tube is fixedly drilled outside the inner fuel tube, the smoke chamber is opened between the inner fuel tube and the outer fuel tube, and a first smoke outlet is opened at one side of the outer fuel tube.

[0008] Optionally, the heat recovery and insulation component includes a first water inlet pipe, a first water outlet pipe, a reflux cavity and a second water outlet pipe, the output end of the first water inlet pipe is fixedly installed on the input end of the combustion cut-off valve cooling cavity, one end of the first water outlet pipe is fixedly installed on the output end of the combustion cut-off valve cooling cavity, the other end of the first water outlet pipe is fixedly installed on the top outer wall of the casing, the reflux cavity is opened inside the casing, one end of the second water outlet pipe is fixedly installed on the bottom outer wall of the casing, and one end of the first water outlet pipe and the second water outlet pipe are both connected to the inside of the reflux cavity.

[0009] Optionally, the smoke filter assembly includes a mounting frame, a plurality of rotors, a drive shaft, a drive motor and a collection box, the mounting frame is fixedly mounted inside the filter box, a plurality of the rotors are rotatably connected to the edge of the filter, one end of the drive shaft is fixedly mounted in the middle of one side of the filter, the drive motor is fixedly mounted on one side of the filter box, the collection box is slidably connected to the bottom of one side of the filter box, one end of the drive shaft is fixedly mounted on one end of the output shaft of the drive motor, the collection box is located at the bottom of one side of the filter, and a cleaning brush is fixedly mounted on one side of the mounting frame, and the output end of the cleaning brush is against the surface of one side of the filter.

[0010] Optionally, one side of the filter box is connected to the smoke chamber output end by setting a pipeline, and the filter screen is rotatably connected to the inner side of the mounting frame by setting a plurality of rotors.

[0011] Optionally, the second heat energy recovery component includes a first connecting pipe, a second connecting pipe, a second water inlet pipe and a third water outlet pipe, the first connecting pipe is fixedly installed between the first cooling hollow plate and the second cooling hollow plate, the second connecting pipe is fixedly installed between the second cooling hollow plate and the third cooling hollow plate, one end of the first connecting pipe is fixedly installed on one side of the first cooling hollow plate, and one end of the third water outlet pipe is fixedly installed on one side of the third cooling hollow plate.

[0012] Optionally, the interiors of the first cooling hollow plate and the second cooling hollow plate are connected through the setting of a first connecting pipe, the interiors of the second cooling hollow plate and the third cooling hollow plate are connected through the setting of a second connecting pipe, and one end of the second water inlet pipe and the third water outlet pipe are respectively connected to the interior of the first cooling hollow plate and the interior of the third cooling hollow plate.

[0013] A method for baking a hot blast furnace system, comprising the following steps: Step 1: First, the gas generator and the combustion-supporting fan are used to transport the gas and the combustion-supporting air to the gas regulating pipeline and the air regulating pipeline, and then transport the gas and the combustion-supporting air to the inner fuel pipe through the inner fuel pipe and the fuel main pipe. Then, the combustion shut-off valve is opened, and the oven burner is ignited. Then, the flue is slightly opened. During the oven baking process, the hot flue gas is discharged through the flue. Then, the first flue outlet pipe is used to pass the flue gas into the smoke cavity between the inner fuel pipe and the outer fuel pipe. At this time, the hot flue gas will heat the inner fuel pipe. Then, the temperature rise of the inner fuel pipe will heat the gas and air passing through it, thereby improving the molecular motion of the gas and air and accelerating the combustion efficiency of the fuel. Step 2: At this time, in the process of using the furnace burner to bake the furnace, cold water is introduced into the cooling cavity of the combustion cut-off valve through the first water inlet pipe to cool the combustion cut-off valve, and then the water used to cool the combustion cut-off valve will be heated, and then introduced into the reflux cavity inside the sleeve through the first water outlet pipe. The sleeve can be used to insulate the fuel main pipe to ensure the high activity of the fuel; Step 3: Then the high-temperature smoke is discharged into the filter box from the pipe connected to the bottom of the smoke chamber and filtered by the filter. During the filtering process, the driving motor will use the driving shaft to drive the filter to rotate inside the mounting frame. During the rotation, the cleaning brush will clean the filter, and the particles will fall into the inside of the collection box; Step 4: Finally, use the second water inlet pipe to introduce cold water into the first cooling hollow plate, and use the first connecting pipe and the second connecting pipe box to introduce cold water into the second cooling hollow plate and the third cooling hollow plate. The hot flue gas is staggered in the first cooling hollow plate, the second cooling hollow plate and the third cooling hollow plate for heat exchange, cooled and then discharged to the outside, reducing the risk of thermal damage of high-temperature flue gas.

[0014] The present invention has at least the following beneficial effects: (1) This scheme is provided with a first heat energy recovery component. Specifically, the gas generator and the combustion-supporting fan are provided to transport the gas and the combustion-supporting air to the gas regulating pipeline and the air regulating pipeline, and then transport the gas and the combustion-supporting air to the inner fuel pipe through the inner fuel pipe and the fuel main pipe. Then, the combustion shut-off valve is opened, and the oven burner is ignited. Then, the flue is slightly opened. During the oven baking process, the hot flue gas is discharged through the flue. Then, the first flue outlet pipe is used to pass the flue gas into the smoke cavity between the inner fuel pipe and the outer fuel pipe. At this time, the hot flue gas will heat the inner fuel pipe. Then, the temperature rise of the inner fuel pipe will heat the gas and air passing through it, thereby improving the molecular motion of the gas and air and accelerating the combustion efficiency of the fuel. (2) This scheme sets up a heat recovery and insulation component. Specifically, in the process of using the furnace burner to bake the furnace, cold water is introduced into the cooling cavity of the combustion cut-off valve through the first water inlet pipe to cool the combustion cut-off valve. Then, the water used to cool the combustion cut-off valve will be heated and then introduced into the reflux cavity inside the casing through the first water outlet pipe. The casing can be used to insulate the fuel main pipe to ensure the high activity of the fuel and the combustion efficiency of the fuel. The hot water generated after heat exchange can be used for daily use, thereby improving the portability of the workers on site. (3) This solution sets up a smoke filter assembly. Specifically, the high-temperature smoke is discharged from the pipe connected to the bottom of the smoke chamber into the filter box and filtered by the filter. During the filtering process, the driving motor drives the filter to rotate on the inside of the mounting frame by the driving shaft. During the rotation, the cleaning brush cleans the filter and the particles fall into the inside of the collection box, thereby filtering the particulate pollutants and preventing the particulate pollutants from polluting the air. (4) This solution sets up a second heat recovery component. Specifically, after filtering particulate matter in the flue gas, cold water is introduced into the first cooling hollow plate through the second water inlet pipe, and cold water is introduced into the second cooling hollow plate and the third cooling hollow plate through the first connecting pipe and the second connecting pipe box. The hot flue gas is staggered in the first cooling hollow plate, the second cooling hollow plate and the third cooling hollow plate for heat exchange, and is cooled and then discharged to the outside, thereby reducing the risk of thermal damage from high-temperature flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Figure 1 It is a schematic diagram of the rear structure of the present invention; Figure 2 It is a front view of the present invention; Figure 3 It is a schematic diagram of the front structure of the present invention; Figure 4 For the present invention Figure 3 A partial enlarged view of the middle A; Figure 5 It is a partial side cross-sectional view of the first heat recovery component of the present invention; Figure 6 A partial side cross-sectional view of a smoke filter assembly of the present invention; Figure 7 It is a schematic diagram of the partial structure of the smoke filter assembly of the present invention; Figure 8 This is a schematic diagram of the structure of the third heat recovery component of the present invention.

[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Hot air furnace; 2. Main burner; 3. Arch inlet; 4. Combustion shut-off valve; 5. Oven burner; 6. Flue; 701. Inner fuel pipe; 702. Outer fuel pipe; 703. Smoke chamber; 704. Gas regulating pipeline; 705. Gas generator; 706. Air regulating pipeline; 707. Combustion-supporting fan; 708. First smoke outlet pipe; 709. Fuel main pipe; 710. First smoke outlet; 801. First water inlet pipe; 802. First water outlet pipe; 803. Casing; 804. Reflux cavity ; 805, second water outlet pipe; 901, filter box; 902, mounting frame; 903, filter screen; 904, rotor; 905, drive shaft; 906, drive motor; 907, cleaning brush; 908, collecting box; 1001, first cooling hollow plate; 1002, second cooling hollow plate; 1003, third cooling hollow plate; 1004, first connecting pipe; 1005, second connecting pipe; 1006, second water inlet pipe; 1007, third water outlet pipe; 12, cold air duct; 13, hot air duct. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 8 The present invention provides a hot blast furnace system and a method for baking the same, comprising a hot blast furnace 1, a main burner 2 is fixedly installed on the top of the hot blast furnace 1, an arch inlet 3 and a hot air duct 13 are respectively opened on both sides of the top of the hot blast furnace 1, a combustion cut-off valve 4 is fixedly installed on the outer side of the arch inlet 3, a baking furnace burner 5 is fixedly installed on the input end of the combustion cut-off valve 4, a flue 6 and a cold air duct 12 are respectively opened on both sides of the bottom of the hot blast furnace 1, and a hot air duct 13 is arranged between the baking furnace burner 5 and the flue 6. The first heat recovery component is arranged between the oven burner 5 and the flue 6. The first heat recovery component is provided with a fuel inner tube 701, a fuel outer tube 702 and a smoke chamber 703. The smoke discharged from the flue 6 passes through the smoke chamber 703 to heat the fuel inner tube 701, so that the combustion raw materials passing through the inner side of the fuel inner tube 701 are heated, the movement between the fuel gas and the air molecules is accelerated, the combustion efficiency is improved, the preheating time is shortened, and the oven efficiency is improved; In some embodiments, see Figure 1 , Figure 2 , Figure 3The first heat energy recovery component includes a gas regulating pipeline 704, an air regulating pipeline 706, a first smoke outlet pipe 708 and a fuel main pipe 709. The output ends of the gas regulating pipeline 704 and the air regulating pipeline 706 are fixedly installed on the side wall of the fuel inner pipe 701. The first smoke outlet pipe 708 is fixedly installed on the output end of the flue 6 and the side wall of the fuel outer pipe 702. The fuel main pipe 709 is fixedly installed on the top of the fuel inner pipe 701 and the input end of the oven burner 5. The input end of the gas regulating pipeline 704 is fixedly installed with a gas generator 705. The input end of the air regulating pipeline 706 is fixedly installed with a combustion-supporting fan 707. The output ends of the gas regulating pipeline 704 and the air regulating pipeline 706 are fixedly installed with the fuel inner pipe 701. The gas regulating pipeline 704 and the air regulating pipeline 706 are connected, the input ends of the gas generator 705 and the combustion-supporting fan 707 are respectively connected, one end of the first smoke outlet pipe 708 is connected to one end of the flue 6, and the other end of the first smoke outlet pipe 708 is connected to the inside of the smoke chamber 703, one end of the fuel main pipe 709 is connected to the input end of the drying furnace burner 5, and the other end of the fuel main pipe 709 is connected to the inside of the fuel inner tube 701, the fuel inner tube 701 is located on one side of the hot blast furnace 1, the fuel outer tube 702 is fixedly drilled on the outside of the fuel inner tube 701, the smoke chamber 703 is opened between the fuel inner tube 701 and the fuel outer tube 702, and a first smoke outlet 710 is opened on one side of the fuel outer tube 702.

[0019] It should be noted that, by opening a smoke chamber 703 between the fuel inner tube 701 and the fuel outer tube 702 for smoke discharge, the smoke chamber 703 can be used for heat exchange of the fuel inner tube 701. During use, the set gas generator 705 and the combustion-supporting fan 707 transport the gas and the combustion-supporting air to the gas regulating pipeline 704 and the air regulating pipeline 706 into the fuel inner tube 701, and then through the fuel inner tube 701 through the fuel main pipe 709 to the drying furnace burner 5, and then open the combustion shut-off valve 4, and ignite the drying furnace burner 5, and then slightly open the flue 6. During the baking process, the hot flue gas is discharged through the flue 6, and then the first smoke outlet pipe 708 is used to pass the flue gas into the smoke chamber 703 between the fuel inner tube 701 and the fuel outer tube 702. At this time, the hot flue gas will heat the fuel inner tube 701, and then the heating of the fuel inner tube 701 will heat the gas and air passing through it, thereby improving the molecular movement of the gas and air and accelerating the combustion efficiency of the fuel.

[0020] The heat recovery and insulation component is arranged at the input end of the oven burner 5. The heat recovery and insulation component is provided with a sleeve 803. When heat is recovered, the sleeve 803 is used to insulate the pipeline to ensure high efficiency between the molecules of the fuel. In some embodiments, see Figure 3 , Figure 4The heat recovery and insulation component includes a first water inlet pipe 801, a first water outlet pipe 802, a reflux cavity 804 and a second water outlet pipe 805. The output end of the first water inlet pipe 801 is fixedly installed at the input end of the cooling cavity of the combustion cut-off valve 4, one end of the first water outlet pipe 802 is fixedly installed at the output end of the cooling cavity of the combustion cut-off valve 4, and the other end of the first water outlet pipe 802 is fixedly installed on the top outer wall of the sleeve 803. The reflux cavity 804 is opened inside the sleeve 803, and one end of the second water outlet pipe 805 is fixedly installed on the bottom outer wall of the sleeve 803. One end of the first water outlet pipe 802 and the second water outlet pipe 805 are both connected to the inside of the reflux cavity 804.

[0021] It should be noted that, by providing a sleeve 803 with a reflux cavity 804, the sleeve 803 can be sleeved on the pipeline for supplying fuel. In the process of using the baking burner 5 to bake the furnace, the first water inlet pipe 801 is used to pass cold water into the cooling cavity of the combustion cut-off valve 4 to cool the combustion cut-off valve 4. Then, the water used to cool the combustion cut-off valve 4 will be heated, and then passed into the reflux cavity 804 inside the sleeve 803 through the first water outlet pipe 802. The sleeve 803 can be used to insulate the fuel main pipe 709 to ensure the high activity of the fuel.

[0022] The smoke filter assembly is arranged on one side of the hot blast furnace 1. The smoke filter assembly is provided with a filter box 901 and a filter net 903. The filter net 903 inside the filter box 901 filters the smoke to prevent the particles in the smoke from being discharged and polluting the atmosphere. In some embodiments, see Figure 6 , Figure 7 The smoke filter assembly includes a mounting frame 902, a plurality of rotors 904, a drive shaft 905, a drive motor 906 and a collection box 908. The mounting frame 902 is fixedly mounted inside the filter box 901, and a plurality of rotors 904 are rotatably connected to the edge of the filter screen 903. One end of the drive shaft 905 is fixedly mounted in the middle of one side of the filter screen 903. The drive motor 906 is fixedly mounted on one side of the filter box 901. The collection box 908 is slidably connected to the bottom of one side of the filter box 901. One end of the drive shaft 905 is fixedly mounted on one end of the output shaft of the drive motor 906. The collection box 908 is located at the bottom of one side of the filter screen 903. A cleaning brush 907 is fixedly mounted on one side of the mounting frame 902. The output end of the cleaning brush 907 is against the surface of one side of the filter screen 903. One side of the filter box 901 is connected to the output end of the smoke chamber 703 by setting a pipeline. The filter screen 903 is rotatably connected to the inner side of the mounting frame 902 through the setting of a plurality of rotors 904.

[0023] It should be noted that, by providing a filter 903 that can move inside the filter box 901, the filter 903 is used to filter the high-temperature smoke when it is discharged into the filter box 901 from the pipe connected to the bottom of the smoke chamber 703. During the filtering process, the drive motor 906 will use the drive shaft 905 to drive the filter 903 to rotate inside the mounting frame 902. During the rotation, the cleaning brush 907 will clean the filter 903, and the particulate matter will fall into the inside of the collection box 908 to filter and collect the particulate matter.

[0024] The second heat recovery component is arranged inside the flue gas filter component. The second heat recovery component is arranged inside the flue gas filter component. The second heat recovery component is arranged inside the flue gas filter component. The first cooling hollow plate 1001, the second cooling hollow plate 1002 and the third cooling hollow plate 1003 are used to perform heat exchange on the exhausted flue gas, cool the flue gas, reduce the direct discharge of high-temperature flue gas, and reduce the risk of heat damage; In some embodiments, see Figure 6 , Figure 8 The second heat recovery component includes a first connecting pipe 1004, a second connecting pipe 1005, a second water inlet pipe 1006 and a third water outlet pipe 1007. The first connecting pipe 1004 is fixedly installed between the first cooling hollow plate 1001 and the second cooling hollow plate 1002. The second connecting pipe 1005 is fixedly installed between the second cooling hollow plate 1002 and the third cooling hollow plate 1003. One end of the first connecting pipe 1004 is fixedly installed on one side of the first cooling hollow plate 1001. The third water outlet pipe One end of 1007 is fixedly installed on one side of the third cooling hollow plate 1003, the first cooling hollow plate 1001 and the second cooling hollow plate 1002 are connected through the setting of the first connecting pipe 1004, the second cooling hollow plate 1002 and the third cooling hollow plate 1003 are connected through the setting of the second connecting pipe 1005, and one end of the second water inlet pipe 1006 and the third water outlet pipe 1007 are respectively connected to the interior of the first cooling hollow plate 1001 and the interior of the third cooling hollow plate 1003.

[0025] It should be noted that the first cooling hollow plate 1001, the second cooling hollow plate 1002 and the third cooling hollow plate 1003 are arranged alternately up and down to form an S-shaped channel. After the flue gas is filtered for particulate matter, cold water is introduced into the first cooling hollow plate 1001 by using the second water inlet pipe 1006, and cold water is introduced into the second cooling hollow plate 1002 and the third cooling hollow plate 1003 by using the first connecting pipe 1004 and the second connecting pipe 1005. The hot flue gas is heat exchanged through the first cooling hollow plate 1001, the second cooling hollow plate 1002 and the third cooling hollow plate 1003 which are arranged alternately, and is cooled and then discharged to the outside, thereby reducing the risk of thermal damage to the high-temperature flue gas.

[0026] The working process and principle of the present invention are as follows: First, the gas generator 705 and the combustion-supporting fan 707 are used to transport the gas and the combustion-supporting air to the gas regulating pipeline 704 and the air regulating pipeline 706, and then the gas and the combustion-supporting air are transported to the fuel inner pipe 701 through the fuel inner pipe 701 and the fuel main pipe 709 to the oven burner 5, and then the combustion shut-off valve 4 is opened, and the oven burner 5 is ignited, and then the flue 6 is slightly opened. During the oven baking process, the hot flue gas is discharged through the flue 6, and then the flue gas is passed into the combustion chamber through the first smoke outlet pipe 708. In the smoke chamber 703 between the fuel inner tube 701 and the fuel outer tube 702, the hot smoke will heat the fuel inner tube 701, and then the heating of the fuel inner tube 701 will heat the gas and air passing through it, thereby improving the molecular motion of the gas and air and accelerating the combustion efficiency of the fuel. At this time, in the process of using the furnace burner 5 to bake the furnace, the first water inlet pipe 801 is used to pass cold water into the cooling chamber of the combustion cut-off valve 4 to cool the combustion cut-off valve 4, and then the water used to cool the combustion cut-off valve 4 will be heated, and then pass through the first The water outlet pipe 802 is passed into the reflux cavity 804 inside the sleeve 803. The sleeve 803 can be used to insulate the fuel main pipe 709 to ensure the high activity of the fuel. Then the high-temperature smoke is discharged into the filter box 901 from the pipe connected to the bottom of the smoke chamber 703 and filtered by the filter screen 903. During the filtering process, the driving motor 906 will use the driving shaft 905 to drive the filter screen 903 to rotate inside the mounting frame 902. During the rotation, the cleaning brush 907 will clean the filter screen 903 to remove particulate matter. Then it falls into the inner side of the collection box 908, and finally, cold water is introduced into the first cooling hollow plate 1001 through the second water inlet pipe 1006, and cold water is introduced into the second cooling hollow plate 1002 and the third cooling hollow plate 1003 through the first connecting pipe 1004 and the second connecting pipe 1005. The hot flue gas is staggered in the first cooling hollow plate 1001, the second cooling hollow plate 1002 and the third cooling hollow plate 1003 for heat exchange, and is cooled and then discharged to the outside, thereby reducing the risk of thermal damage of high-temperature flue gas.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hot air furnace baking system, characterized in that: The invention comprises a hot blast furnace (1), wherein a main burner (2) is fixedly mounted on the top of the hot blast furnace (1), an arch entrance (3) and a hot air duct (13) are respectively provided on both sides of the top of the hot blast furnace (1), a combustion cut-off valve (4) is fixedly mounted on the outer side of the arch entrance (3), a drying furnace burner (5) is fixedly mounted on the input end of the combustion cut-off valve (4), a flue (6) and a cold air duct (12) are respectively provided on both sides of the bottom of the hot blast furnace (1), and a hot air duct (13) is provided between the drying furnace burner (5) and the flue (6). A first heat energy recovery component is arranged between the oven burner (5) and the flue (6); the first heat energy recovery component is provided with a fuel inner tube (701), a fuel outer tube (702) and a smoke chamber (703); the first heat energy recovery component utilizes smoke discharged from the flue (6) to pass through the smoke chamber (703) to heat the fuel inner tube (701), thereby heating the combustion raw materials passing through the inner side of the fuel inner tube (701), accelerating the movement between the fuel gas and air molecules, improving the combustion efficiency, shortening the preheating time, and improving the oven efficiency; The heat recovery and insulation component is arranged at the input end of the oven burner (5). The heat recovery and insulation component is provided with a sleeve (803). When heat energy is recovered, the sleeve (803) is used to insulate the pipeline, thereby ensuring efficient transport between fuel molecules. A smoke filter assembly is arranged on one side of the hot blast furnace (1); the smoke filter assembly is provided with a filter box (901) and a filter net (903); and the filter net (903) inside the filter box (901) is used to filter the smoke, thereby preventing particulate matter in the smoke from being discharged and polluting the atmosphere; The second heat energy recovery component is arranged inside the flue gas filtering component. The second heat energy recovery component is arranged inside the flue gas filtering component. The second heat energy recovery component is arranged inside the flue gas filtering component. The first cooling hollow plate (1001), the second cooling hollow plate (1002) and the third cooling hollow plate (1003) are used to perform heat exchange on the exhausted flue gas, cool the flue gas, reduce the direct emission of high-temperature flue gas, and reduce the risk of thermal damage.

2. A hot air stove baking system according to claim 1, characterized in that: The first heat energy recovery component comprises a gas regulating pipeline (704), an air regulating pipeline (706), a first smoke outlet pipe (708) and a fuel main pipe (709); the output ends of the gas regulating pipeline (704) and the air regulating pipeline (706) are both fixedly mounted on the side wall of the fuel inner pipe (701); the first smoke outlet pipe (708) is fixedly mounted on the output end of the flue (6) and the side wall of the fuel outer pipe (702); the fuel main pipe (709) is fixedly mounted on the top of the fuel inner pipe (701) and the input end of the oven burner (5); a gas generator (705) is fixedly mounted on the input end of the gas regulating pipeline (704); and a combustion-supporting fan (707) is fixedly mounted on the input end of the air regulating pipeline (706).

3. A hot air stove baking system according to claim 2, characterized in that: The output ends of the gas regulating pipeline (704) and the air regulating pipeline (706) are both connected to the fuel inner tube (701); the input ends of the gas regulating pipeline (704) and the air regulating pipeline (706) are respectively connected to the output end of the gas generator (705) and the output end of the combustion-supporting fan (707); one end of the first smoke outlet pipe (708) is connected to one end of the flue (6); the other end of the first smoke outlet pipe (708) is connected to the interior of the smoke chamber (703); one end of the fuel main pipe (709) is connected to the input end of the oven burner (5); the other end of the fuel main pipe (709) is connected to the interior of the fuel inner tube (701).

4. A hot blast furnace system according to claim 1, characterized in that: The inner fuel tube (701) is located at one side of the hot blast stove (1); the outer fuel tube (702) is fixedly drilled outside the inner fuel tube (701); the smoke chamber (703) is provided between the inner fuel tube (701) and the outer fuel tube (702); and a first smoke outlet (710) is provided at one side of the outer fuel tube (702).

5. The hot air stove baking system according to claim 1, characterized in that: The heat energy recovery and heat preservation component comprises a first water inlet pipe (801), a first water outlet pipe (802), a reflux cavity (804) and a second water outlet pipe (805); the output end of the first water inlet pipe (801) is fixedly mounted on the input end of the cooling cavity of the combustion cut-off valve (4); one end of the first water outlet pipe (802) is fixedly mounted on the output end of the cooling cavity of the combustion cut-off valve (4); the other end of the first water outlet pipe (802) is fixedly mounted on the top outer wall of the sleeve (803); the reflux cavity (804) is opened inside the sleeve (803); one end of the second water outlet pipe (805) is fixedly mounted on the bottom outer wall of the sleeve (803); one end of each of the first water outlet pipe (802) and the second water outlet pipe (805) is connected to the inside of the reflux cavity (804).

6. A hot air stove baking system according to claim 1, characterized in that: The smoke filter assembly comprises a mounting frame (902), a plurality of rotors (904), a driving shaft (905), a driving motor (906) and a collecting box (908); the mounting frame (902) is fixedly mounted inside the filter box (901); the plurality of rotors (904) are rotatably connected to the edge of the filter screen (903); one end of the driving shaft (905) is fixedly mounted in the middle of one side of the filter screen (903); the driving motor (906) is fixedly mounted on one side of the filter box (901); the collecting box (908) is slidably connected to the bottom of one side of the filter box (901); one end of the driving shaft (905) is fixedly mounted on one end of the output shaft of the driving motor (906); the collecting box (908) is located at the bottom of one side of the filter screen (903); a cleaning brush (907) is fixedly mounted on one side of the mounting frame (902); the output end of the cleaning brush (907) is abutted against the surface of one side of the filter screen (903).

7. A hot blast furnace system according to claim 6, 1, characterized in that: One side of the filter box (901) is connected to the output end of the smoke chamber (703) through a pipeline, and the filter screen (903) is rotatably connected to the inner side of the mounting frame (902) through the arrangement of a plurality of rotors (904).

8. The hot air stove baking system according to claim 1, characterized in that: The second heat energy recovery component comprises a first connecting pipe (1004), a second connecting pipe (1005), a second water inlet pipe (1006) and a third water outlet pipe (1007); the first connecting pipe (1004) is fixedly installed between the first cooling hollow plate (1001) and the second cooling hollow plate (1002); the second connecting pipe (1005) is fixedly installed between the second cooling hollow plate (1002) and the third cooling hollow plate (1003); one end of the first connecting pipe (1004) is fixedly installed on one side of the first cooling hollow plate (1001); and one end of the third water outlet pipe (1007) is fixedly installed on one side of the third cooling hollow plate (1003).

9. The hot air stove baking system according to claim 1, characterized in that: The interiors of the first cooling hollow plate (1001) and the second cooling hollow plate (1002) are connected via a first connecting pipe (1004), the interiors of the second cooling hollow plate (1002) and the third cooling hollow plate (1003) are connected via a second connecting pipe (1005), and one end of the second water inlet pipe (1006) and the third water outlet pipe (1007) are respectively connected to the interior of the first cooling hollow plate (1001) and the interior of the third cooling hollow plate (1003).

10. A method for baking a hot blast stove system according to any one of claims 1 to 9, characterized in that: The specific steps include: Step 1: First, the gas generator (705) and the combustion-supporting fan (707) are used to transport the gas and the combustion-supporting air to the gas regulating pipeline (704) and the air regulating pipeline (706) and then transport the gas and the combustion-supporting air to the inner fuel pipe (701) through the inner fuel pipe (701) and the fuel main pipe (709). Then, the combustion cut-off valve (4) is opened, and the oven burner (5) is ignited. Then, the flue (6) is slightly opened. During the oven baking process, the hot flue gas is discharged through the flue (6). Then, the first flue outlet pipe (708) is used to pass the flue gas into the smoke cavity (703) between the inner fuel pipe (701) and the outer fuel pipe (702). At this time, the hot flue gas heats the inner fuel pipe (701). Then, the temperature of the inner fuel pipe (701) heats the gas and air passing through it, thereby improving the molecular motion of the gas and air and accelerating the combustion efficiency of the fuel. Step 2: At this time, in the process of using the furnace burner (5) to bake the furnace, cold water is introduced into the cooling chamber of the combustion cut-off valve (4) through the first water inlet pipe (801) to cool the combustion cut-off valve (4), and then the water used to cool the combustion cut-off valve (4) is heated and then introduced into the reflux cavity (804) inside the sleeve (803) through the first water outlet pipe (802). The sleeve (803) can be used to insulate the fuel main pipe (709) to ensure the high activity of the fuel; Step 3: The high-temperature smoke is then discharged from the pipe connected to the bottom of the smoke chamber (703) into the filter box (901) and filtered using the filter screen (903). During the filtering process, the drive motor (906) drives the filter screen (903) to rotate inside the mounting frame (902) using the drive shaft (905). During the rotation process, the cleaning brush (907) cleans the filter screen (903), and the particles fall into the inside of the collection box (908); Step 4: Finally, cold water is introduced into the first cooling hollow plate (1001) through the second water inlet pipe (1006), and cold water is introduced into the second cooling hollow plate (1002) and the third cooling hollow plate (1003) through the first connecting pipe (1004) and the second connecting pipe (1005). The hot flue gas is staggered in the first cooling hollow plate (1001), the second cooling hollow plate (1002) and the third cooling hollow plate (1003) for heat exchange, and is cooled and then discharged to the outside, thereby reducing the risk of thermal damage to the high-temperature flue gas.

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